Apple production across Europe is experiencing major yield losses due to pest damage, and the need for alternative production methods are growing. Ecological infrastructures are important to create resilient production systems and increase functional biodiversity. This study investigated perennial flower strips as a means of promoting natural enemies, thereby reducing infestation by the rosy apple aphid, Dysaphis plantaginea, and fruit damage caused by it. In 2016 and 2017, effects of perennial flower strips were assessed in eight organic apple orchards with and without flower strips. In orchards with flower strips, assessments were done in tree rows at two distances: 1st and 3rd row from the flower strip. Assessments included field samples of arthropods, visual observations of D. plantaginea symptoms and observations of predators, observations of predators directly associated with aphid colonies, and fruit damage. In 2016, significantly more symptoms of D. plantaginea were observed in the 3rd row from the flower strip compared to the 1st row from the flower strip. Both years, more predators were observed in the 1st row from the flower strip than in the 3rd row from the flower strip. In 2017, more predators were observed in orchards with a flower strip than in orchards with no flower strip, and more predators were observed inside the aphid colonies in trees in the 1st row from the flower strip than in the 3rd row from the flower strip. Predator diversity in apple trees was also positively affected by proximity to a flower strip. In conclusion, perennial flower strips consistently promote the occurrence of natural enemies in their proximity, while the effect decreases with distance. The correlation between aphid abundance and predators was not always consistent, likely because the majority of the observed predators were generalists and therefore contributing to the natural regulation of the entire herbivore complex in the apple orchards.

由于害虫的破坏，整个欧洲的苹果生产正在遭受重大的产量损失，并且对替代生产方法的需求正在增长。生态基础设施对于创建有弹性的生产系统和增加功能性生物多样性非常重要。这项研究调查了多年生花条作为促进天敌的一种手段，从而减少了红苹果蚜虫、Dysaphis plantaginea的侵扰和由此引起的果实损害。2016 年和 2017 年，在 8 个有花条和没有花条的有机苹果园中评估了多年生花条的效果。在带有花条的果园中，评估是在两个距离的树行中进行的：距离花条的第一行和第三行。评估包括节肢动物的田间样本、D. plantaginea的视觉观察捕食者的症状和观察，与蚜虫群落直接相关的捕食者的观察，以及果实损害。2016 年，D. plantaginea的症状明显增多与花带的第 1 行相比，在花带的第 3 行观察到。这两年，在花带的第 1 排比在花带的第 3 排观察到更多的捕食者。2017年，有花条的果园比无花条的果园观察到的天敌多，花条第1排树的蚜虫菌落内的天敌多于花条第3排。苹果树的捕食者多样性也受到靠近花带的积极影响。总之，多年生花条始终促进天敌在其附近的出现，而效果随着距离的增加而降低。蚜虫丰度与捕食者之间的相关性并不总是一致的，